Module 2- Moles Of Gas/PV=nRT

Question 1

What do big numbers in equations tell you??

Answer 1

The ratio of moles in the equation

Question 2

What does the equation work out??

Answer 2

The pressure, temperature, number of moles, gas constant and volume of an IDEAL GAS

Question 3

What assumptions do we make about ideal gases??

Answer 3

1) no intermolecular forces between molecules
2) volume of molecules is negligibly small compared to volume of container
3) molecules move completely randomly

Question 4

What is P in the formula??

Answer 4

Pressure- measured in pascals/ Pa
Conversion= 1KPa=1000 pascals
1 atmosphere= 101,325 Pa
1 bar= 100KPa= 100,000 Pa

Question 5

What is V in the formula??

Answer 5

V= volume
Measured in M3
1M3= 1000 dm3= 1,000,000cm3
ALWAYS CONVERT TO Metres cubed

Question 6

What is n in the formula??

Answer 6

Number of moles

Can be worked out by the gas equation of the mass/mr

Question 7

What is the R in the equation??

Answer 7

R= the gas constant

It is always 8.134JK-1mol-1

Question 8

What is T in the formula??

Answer 8

T= temperature
Must be in KELVIN
convert from degrees to kelvin by adding 273